More than 120 people have been killed after a powerful earthquake struck a remote region of Tibet on Tuesday morning, with tremors felt across the Himalayas in neighboring Nepal, Bhutan and parts of northern India.

More than 400 people trapped by a strong earthquake in the foothills of the Himalayas have been rescued, Chinese officials said, while over 30,000 residents have been relocated, as the search for survivors entered a second day on Wednesday.

A strong earthquake killed more than 100 people in Tibet and left many others trapped in the autonomous region of western China, state media say.